R Notebook

library(data.table)       #Load all required packages

data.table 1.11.8  Latest news: r-datatable.com

library(rvest)

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library(lubridate)

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library(dbplyr)
library(DataComputing)

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Loading required package: ggplot2

library(magrittr)
library(Hmisc)

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library(party)

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library(rpart)

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rm(list = ls())            #Clean up environment

Background Information

This dataset contains policy data for 50 US states and DC from 2001 to 2017. Data include information related to state legislation and regulations on nutrition, physical activity, and obesity in settings such as early care and education centers, restaurants, schools, work places, and others. To identify individual bills, use the identifier ProvisionID. A bill or citation may appear more than once because it could apply to multiple health or policy topics, settings, or states.

getwd()                          #Get working directory

[1] "/Users/fun.k/Final-Project"

setwd("~/Downloads")             #Set working directory 

The working directory was changed to /Users/fun.k/Downloads inside a notebook chunk. The working directory will be reset when the chunk is finished running. Use the knitr root.dir option in the setup chunk to change the working directory for notebook chunks.

untidy <-read.csv("CDC_Nutrition__Physical_Activity__and_Obesity_-_Legislation.csv")    #Read file in table format and create a data frame from it
gc(reset=TRUE)                 #Change from data frame to data table

          used  (Mb) gc trigger  (Mb) limit (Mb) max used  (Mb)
Ncells 2249895 120.2    4362361 233.0         NA  2249895 120.2
Vcells 4725109  36.1   10146329  77.5      16384  4725109  36.1

tracemem(untidy)

[1] "<0x10bc0dd00>"

untidy <- as.data.table(untidy)

tracemem[0x10bc0dd00 -> 0x10cecd680]: copy as.data.table.data.frame as.data.table 
tracemem[0x10bc0dd00 -> 0x10aa37c50]: as.list.data.frame as.list vapply copy as.data.table.data.frame as.data.table 

gc()

          used  (Mb) gc trigger  (Mb) limit (Mb) max used  (Mb)
Ncells 2250670 120.2    4362361 233.0         NA  2254863 120.5
Vcells 4729015  36.1   10146329  77.5      16384  5202686  39.7

What can we do with this data?

This dataset can be useful in looking at

untidy           #Take a look

#Clean Data 
#Change variables to start with lowercase/ make easier to use
Legislation <-
  untidy %>%
  rename(year = Year, quarter = Quarter, state = LocationAbbr, healthTopic = HealthTopic, policyTopic = PolicyTopic, dataSource = DataSource, setting = Setting, title = Title, status = Status, citation = Citation, statusAltValue = StatusAltValue, dataType = DataType, comments = Comments, enDate = EnactedDate, effDate = EffectiveDate, coordinates = GeoLocation, display = DisplayOrder)
Legislation

What type of information can we find with this data?

We can see how much legislation has been passed in certain years, which years have been the most progressive, which states have more legislation than others, which topic has been most popular, and more. This information can give government officials the ability to see where certain states need to improve, which topics need to be emphasized, and more.

Which year passed the most legislation?

yearlyData <-
Legislation %>%
  group_by(year) %>%
  summarise(total = sum(year)) %>%
  mutate(total = total/1000)
yearlyData %>%
  ggplot(aes(x=year,y=total ))+
  geom_bar(stat='identity',position='stack', width=.9, fill = "red") +
  ylab("Total (1000s)") +
  xlab("Year") +
  xlim()

Error in UseMethod("limits") : 
  no applicable method for 'limits' applied to an object of class "NULL"

Each bar in the chart represents one year. One can see that in 2011, the most legislation/regulation has been passed between 2001 and 2017.

Legislation on the Map

Predicting Status based on Year and State

predictedStatus <-
  Legislation %>%
    rpart(status ~ year + state, data = .)

Error in Legislation %>% rpart(status ~ year + state, data = .) : 
  could not find function "%>%"